Drive-chain



(No Model.;

D. SCHUSTEK. Drive Chain.

No. 233,118. Patented Oct. 12, I880.

A E. Z

A/ @F 4 mu :11 um 6 -PETERS, PHOTO-LITMOGHAPHER, WASHINGTON o C UNITED STATES PATENT OFFICE.

DANIEL SGHUSTEK, OF CHICAGO, ILLINOIS.

DRIVE-CHAIN.

SPECIFICATION forming part of -Letters Patent No. 233,118, dated October 12, 1880.

Application filed April 1, 1880.

To all whom it may concern:

Be it known that I, DANIEL SonUsrnK, of Chicago, county of Cook, and State of Illinois, have invented certain Improvements in Drive- Ohains, of which the following is a specification.

My invention relates to certain improvements upon that class of open -linked drivechains the links of which are detachable by design, but not by accident, and which are cast of metal, without the use of a core, complete and ready for use.

My said invention will be hereinafter fully described with reference to the accompanying drawings, in which- Figure 1 represents a plan of the under side of a drive-chain embracin gin the construction of its links my improvement; Fig. 2, an edge view of two links of the chain properly connected Fig. 3, a like view of two links turned into suitable relative positions to each other for detachment, and Fig. 4 a perspective of a single link of such a chain.

Aindicates the side bars of the link; B, the hooks with which they terminate, without a cross-bar, at one end of the link; D, the two openings or eyeholes in the same cross-bar with which and into which they terminate at the other end O. the cylindricallyformed parts of the eye-holes D, that are grasped by the hooks B; a, the cam-formations projecting from the ends of the side bars at the same end of the link; I), the convex formations or shoulders on the other ends of the side bars at the hook ends of the link.

In Fig. 2 the books of the right-hand link are shown as inserted properly into the eyeholes of the left-hand link, and the apexes b of the hooked end are in contact with the apexes of the cams aof the other end, and whilein that position it is manifestly impossible to detach the links from each other; but if the hook end of the left link be raised and revolved upon the (No model.)

other end until it shall occupy the position shown in Fig. 3, the leftlink may then be drawn directly out of the hooks of the right-hand link, and until it shallhave reached that position the cams a and the convex shoulders I) are in rolling contact with each other, and they render detachmentimpossible. When attaining that position, however, the points of the cams a will have passed beyond the shoulders I) and within the hooks, and the two links will be free to be detached.

In Figs. 2 and 4 the interiors of the hooks are shown to have such form that in casting the sand can be removed therefrom, so that the whole link can be cast in one piece at one operation, and without the use of a core, and saving of both labor and material will result.

I am aware that W. D. Ewart, in the Letters Patent of the United States issued to him for links for drive chains, dated March 6, 1877, shows a link having two side bars terminating in hooks without a cross-bar at one end, and at the other end connected by a plain straight cross-bar, and I therefore disclaim that construction; but

What I do claim as myinvention, and desire to secure by Letters Patent, is-

A link adapted to form an integral part of a drive-chain composed of entirely similar links, each consisting of two side bars, A, provided with hooks B and convex shoulders I) at one end, but without a cross-bar, and provided at the other end with a connecting" cross-bar having two eye-holes, D, therein, and having the cylindrical parts 0 and cam-formations a, such links being adapted to connect and articulate with other similar links, as shown and described.

DANIEL SOHUS'IEK.

Witnesses:

J AlVIES FOSGHINBAUR, ARTHUR H. HALL. 

